Radioantenna



April 1, 1930. NOIRQT ET AL 1,752,925

RADIO ANTENNA Filed 001;. 21, 1927 gwuqptom LZ BIA/cairn i, BEBE Jeri,

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Patented Apr. 1, 1930 I i UNITED STATES PATENT-OFFICE LEO F. NOIROT, OTTO-G. NOIROT, AND GEORGE C. RUPERT, OF.PEORIA, ILLINOIS RADIOANTENNA Application filed October 21, 1927. Serial No. 227,805.

This invention pertains to radio antennae. illustrated in Figure 3. The rod may be An object is the provision of an antenna of mounted upon a suitable support such as a a restricted form wound substantially in the pole or building, not shown, or as shown in form of a ball that is portable and which said Figure 3 a ring. 8 may be secured under [5 includes a novel arrangement of mounting one of the nuts 6 by which to suspend the 55 of the wire serving to receive the radio waves. structure from any support, not shown.

Another object is to provide a ball form of Upon the radial strips 1 is now placed a antenna wherein the wire for receiving the suitable conductor 8' for receiving the radio radio waves is wound upon a support but waves, said conductor being wound spirally l thoroughly insulated from such support. beginning at a point near one of the plates 3, 63

Still another object is to provide a supfor example, lodging the windings against porting structure upon which the antenna or behind the ears at of the strips 1, there bewire is wound spirally, the several convoluing insulating portions 9, preferably tubes of tions of the wire being insulated from one anglass, interposed between the conductor and other and from such structure. the said strips 1, the conductor being in fact C In addition, the invention relates to certhreaded through said tubes. The conductor tain details of construction and arrangements is thus prevented having contact with the of parts to be brought out herein aided by the strips 1 preventing shorting and perhaps accompanying drawing in which: grounding under certain conditions. One Figure 1 is an elevation of my improved terminal of the conductor is electrically con- 70 antenna in a preferred form. nected to a binding screw 10 attached to and Figure 2 is a plan of part of the same as insulated from the structure, the lead in of seen from its under or lower side. the radio set, neither of which is shown, being Figure 3 is a vertical section of part of the likewise attached to said binding screw. invention showing structural details, and Glass has been found to be the best type of 7 Figure 4 shows part of a supporting-meminsulation for protecting the conductor 8 ber of the antenna in perspective. since moisture cannot permeate it and de-' The antenna of our invention is substanstroy the effectiveness of the device. tially ball-shaped and to the end that it may We claim:

be preferably so constructed we provide a 1. An antenna structure including a series 80 series of strips 1 preferably of metal for the of strips circularly curved in the direction sake of strength and rigidity, which are bent of their lengths, a member at each end of the into substantially semicircular form. As strips to which the same are secured in radiatshown in Figure 2 these strips diverge from ing spaced relation, a series of ears struck a common point, their ends being secured in up from the strips at their outer sides along 85 suitable manner as by rivets 2, for example, the lengths thereof in spaced relation, and a to plates 3 at diametrically opposite posiwinding of wire mounted upon the structure tions in the completed ball, said plates being lodged against said, ears, the windings of shown in Figure 1 as to their positions, being said wire being insulated from said strips and spaced apart about as shown. At spaced from each other.

intervals the strips 1 are furnished with ears 2. An antenna structure including a series or lugs 4 struck up therefrom, Figure 4, these of strips circularly curved throughout their being for a purpose to appear. lengths, a member at each end of the strips to Preferably in order to brace the structure which the same are secured in rigid radiating and hold it in shape a rod 5 is erected within spaced relation, a series of ears struck up it, its ends being screw threaded and extendfrom the strips at their outer sides along the ed through the plates 3 receiving nuts 6 at same in spaced relation, a winding of wire each side of each of the latter. The rod 5 is mounted upon the structure lodged against insulated from the plates 3 by interposing said ears, an insulating portion interposed insulating material 7 between the parts as between the windings and said strips, and a strut spacing apart the members to which the 7 said strips are attached and maintaining the structure rigid.

3. An antenna ball comprising a series of strips circularly curved, spaced apart and secured relatively forming a ball-like structure, a member spacing apart and connecting the strips centrally of the structure, said strips each having ears struck up therefrom along its longitudinal line and extending from the outer surface thereof, and a Wire spirally Wound upon the strips behind the ears thereof in a single given direction, the same being insulated from the strips, the convolutions of the Wire being insulated from each other.

In testimony whereof we afiix our signatures.

. LEO F. NOIROT.

OTTO G. NOIROT. GEORGE C. RUPERT. 

